C Si 
 1.0000000000000000
     3.0846778118460887   -0.0000000000000000    0.0000000000000000
    -1.5423389059230443    2.6714093475489076    0.0000000000000000
     0.0000000000000000    0.0000000000000000   68.0029799392089558
 C   Si 
  27  27
Selective dynamics
Cartesian
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